/****************************************************************************
** Copyright (c) quickfixengine.org  All rights reserved.
**
** This file is part of the QuickFIX FIX Engine
**
** This file may be distributed under the terms of the quickfixengine.org
** license as defined by quickfixengine.org and appearing in the file
** LICENSE included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.quickfixengine.org/LICENSE for licensing information.
**
** Contact ask@quickfixengine.org if any conditions of this licensing are
** not clear to you.
**
****************************************************************************/

#ifdef _MSC_VER
#include "stdafx.h"
#else
#include "config.h"
#endif
#include "CallStack.h"

#include "HttpParser.h"
#include "Utility.h"
#include <algorithm>

namespace FIX
{
bool HttpParser::readMessage( std::string& str )
throw( MessageParseError )
{ QF_STACK_PUSH(HttpParser::readMessage)

  std::string::size_type pos = 0;

  if( m_buffer.length() < 4 ) 
    return false;
  pos = m_buffer.find( "\r\n\r\n" );
  if( m_buffer.length() > 2048 )
    throw MessageParseError();
  if( pos == std::string::npos ) 
    return false;
  str = m_buffer.substr( 0, pos + 4 );
  m_buffer.erase( 0, pos + 4 );

  return true;

  QF_STACK_POP
}
  void HttpParser::readFromStream( int  m_socket)  throw ( SocketRecvFailed )
  {QF_STACK_PUSH(HttpParser::readFromStream)
	  //We can read without blocking
      int size = recv( m_socket, m_sockbuffer, sizeof(m_sockbuffer), 0 );
      if ( size <= 0 ) { throw SocketRecvFailed( size );}
	  m_buffer.append(m_sockbuffer, size );
	  return;
  QF_STACK_POP
  }
  
  void HttpParser::writeMessage( const std::string& msg )  throw ( MessageParseError )
  {
	  m_sendQueue.push_back( msg );
  }

  bool HttpParser::writeToStream( int  m_socket) throw ( SocketRecvFailed )
  {
	  const iMsg& msg = m_sendQueue.front();
	  int result = socket_send
		  ( m_socket, msg.c_str() + m_sendLength, msg.length() - m_sendLength );

	  if( result > 0 )
		  m_sendLength += result;

	  if( m_sendLength == msg.length() )
	  {
		  m_sendLength = 0;
		  m_sendQueue.pop_front();
	  }
	  return !m_sendQueue.size();
  }

}
